Recently our main activity in furnace design is related to three-phase furnaces with electrodes. On the material side we have been working with topics all the way from transportation of raw material into the furnace to the tapping of metal out of it. Further we work with the reaction of air and combustible gases like CO and SiO inside the furnace and collection of off-gas both from the reaction zone as well as the tapping process.

We have various approach to work with the furnace design:

• Observation and measurement at existing furnaces
• Experimental setup in an in-house lab
• Development of computer models

Examples of topics that we have been working with:

• Design of hood and off-gas channels to have control of velocities, temperatures, clogging of fines etc

• Interaction between gas flow and charging materials to avoid inappropriate motion of materials inside the furnace hood.
• Investigation of radiation from flames and warm faces to prevent high temperatures on furnace equipment.
• Optimizing the combustion inside the furnace to lower the emissions